Handheld luminometer



FIG. 1 is a front perspective view of a handheld luminometer embodyingthe new design;

FIG. 2 is a front view of a handheld luminometer embodying the newdesign;

FIG. 3 is a right side view of a handheld luminometer embodying the newdesign;

FIG. 4 is a back view of a handheld luminometer embodying the newdesign;

FIG. 5 is a left side view of a handheld luminometer embodying the newdesign;

FIG. 6 is a top plan view of a handheld luminometer embodying the newdesign;

FIG. 7 is a bottom plan view of a handheld luminometer embodying the newdesign; and,

FIG. 8 is a back perspective view of a handheld luminometer embodyingthe new design.

The broken lines showing form no part of the claimed design.

CLAIM The ornamental design for a handheld luminometer, as shown anddescribed.